Forgive me my cynicism, but as a casual observer, it is easy to notice the remarkable - indeed, miraculous - effect that simply being on the internet has on people. Everyone's height/number of sexual partners/cup size/dick size/job/hometown/etc becomes more and more exaggerated under the cloak of eAnonymity. You oughtn't be surprised when people attempt to similarly inject a little exaggeration into their story, attempting to seem even more pornographic than the next applicant.
Furthermore, consider that there is a "type" that seeks out websites like these, and that such a type may not only eagerly embrace the previously mentioned fault but also possess a better than average profile without exaggeration.
Regardless of what you see on the news, you're unlikely to murdered in bed by a/n [insert threatening ethnic group here]. Similarly, regardless of what you read on SDN, you're unlikely to encounter a lot of 36+ MCATs in the real world.
